Deterministic transformations of three-qubit entangled pure states
Abstract
The states of three-qubit systems split into two inequivalent types of genuine tripartite entanglement, namely the Greenberger-Horne-Zeilinger (GHZ) type and the type. A state belonging to one of these classes can be stochastically transformed only into a state within the same class by local operations and classical communications. We provide local quantum operations, consisting of the most general two-outcome measurement operators, for the deterministic transformations of three-qubit pure states in which the initial and the target states are in the same class. We explore these transformations, originally having standard GHZ and standard states, under the local measurement operations carried out by a single party and () parties (successively). We find a notable result that the standard GHZ state cannot be deterministically transformed to a GHZ-type state in which all its bipartite entanglements are nonzero, i.e., a transformation can be achieved with unit probability when the target state has at least one vanishing bipartite concurrence.
Cite
@article{arxiv.1905.06631,
title = {Deterministic transformations of three-qubit entangled pure states},
author = {Gokhan Torun and Ali Yildiz},
journal= {arXiv preprint arXiv:1905.06631},
year = {2019}
}
Comments
9 pages, 4 figures. Published version!